Discussion
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- Question
Which of the following radioactive element is generally involved in RIA?
Options- A. Tritium
- B. Carbon-14
- C. Iodine-125
- D. All of these
- Correct Answer
- All of these
- 1. PCR amplifies millions of copies of
Options- A. a short fragment of DNA
- B. the entire genome (all the DNA in a sample)
- C. both (a) and (b)
- D. short chain RNA Discuss
- 2. Which of the following is not part of the lac operon?
Options- A. I
- B. O
- C. P
- D. none of these Discuss
- 3. Fatty acid synthesis takes place in
Options- A. mitochondria
- B. cell membrane
- C. cytosol
- D. endoplasmic reticulum Discuss
- 4. Antibodies can be used
Options- A. for the localization of proteins in the cell
- B. for protein purification
- C. to catalyze chemical reactions
- D. all of the above Discuss
- 5. Boat and chair conformations are found
Options- A. in pyranose sugars
- B. in any sugar without axial -OH groups
- C. in any sugar without equatorial -OH groups
- D. only in D-glucopyranose Discuss
- 6. A polyclonal antibody response
Options- A. is produced only in response to polymeric antigens
- B. is produced by several B cells recognizing different pitopes on the same antigen
- C. occurs during the lag phase of the immune response
- D. violates clonal selection Discuss
- 7. In terms of cell communication, what do bacterial pathogens such as cholera and anthrax have in common?
Options- A. They destroy the receptors for key signaling molecules
- B. They prevent the production of key signaling molecules
- C. They alter the chemical structure of key signaling molecules
- D. They block the normal functioning of signal transduction mechanisms Discuss
- 8. Which of the following amino acids can form hydrogen bonds with their side (R) groups?
Options- A. Asparagine
- B. Aspartic acid
- C. Glutamine
- D. All of these Discuss
- 9. The major second messengers are
Options- A. cAMP
- B. cGMP
- C. DAG
- D. All of these Discuss
- 10. Which of the following is not part of the vertebrate immune system?
Options- A. Lymphocytes
- B. Antibodies
- C. Cardiac glycosides
- D. Lymph nodes Discuss
More questions
Correct Answer: a short fragment of DNA
Correct Answer: I
Correct Answer: cytosol
Correct Answer: all of the above
Correct Answer: in pyranose sugars
Correct Answer: is produced by several B cells recognizing different pitopes on the same antigen
Correct Answer: They block the normal functioning of signal transduction mechanisms
Correct Answer: All of these
Correct Answer: All of these
Correct Answer: Cardiac glycosides
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